A Gaussmeter measures EMF. EMF is magnetic radiation caused by electro forces.
Electric wires in the wall especially if they are unbalanced can cause a net
current ie: more in one that in the other, together there is a net amount.
Normally you have hot and neutral, current through one causes a rotational
field of magnetic flux, the return current through the other has an opposite flow
and direction of this flux thus canceling each other out.

In the case of my office in Pasadena, it was wired by someone that was the low
bidder who saved money by cheaping out on the number of wires used. In one
circuit there were 5 hots and 3 neutrals (12 wires in that 1 conduit) of which 2
hots and 1 neutral went through some conduit 3 ft to the left of where my desk
is, from the floor up over my head to the light switch. This neutral was also
shared with the downstairs circuit, there was a net current through the conduit
of from 3.5 amps normally to 6.5 amps when they had the floor heater on
downstairs. At 1 meter the calculations are 14 mg to 22 mg and such was
measured. I was subjected to this for about 3.5 years, the higher amount in the
winter only. When I finally figured it out was around Nov 2001. I was getting
weaker each day and got to where I could not focus on the monitor well, the
center of my vision was going away and I had many floaters. The monitor was a
17" set at 60 Hz refresh with a very slight flicker all the time. I got a new
pro model Samsung 19" set at 85 Hz refresh and noticed that it flickered like
crazy but not when set at 60 Hz. So the other monitor was hiding the emf
problem in that office because it was in sync with the 60hz of the line current.

I brought an am radio to the office and it would be very noisy in that office
but not in the other rooms and really bad near the wall and ceiling. I then went
out and bought an emf meter (cellsensor, analog meter, single axis, $42.00) and
measured very high readings only in that office and the hallway. It would blink
and beep like crazy even on the high setting. I did much research and talked to
other engineer friends who tell me it is unconceivable to have that much emf. So
I bought a digital emf meter (A.W. Sperry EMF-200A, single axis, $60.00) and
proved it. I was getting over 199 mg at the wall about 2" from the conduit
behind sheetrock. It went off the scale about an inch from the wall.

The boss/owner tells me I am crazy and that "it is impossible, the wires are in
conduit". I tell him that nothing can shield magnetic fields. I tell him to look
at my monitor and showed him some data from the net but he denied it all. He
would not get an electrician in to fix it because he is told that it is not
possible. I move to another room for a couple months where it is only 6-9 mg yet
28 to anyone standing in the hallway. Then I talk to the city of LA guy that is
in charge of emf and he says that can happen and gives me some clues to search
on namely the words "net current". Normally he would come out and check it out
but he cannot do anything about it in this case, because I am in Pasadena, He
did not know of any electricians that he could refer. So I call the Pasadena
dwp and they tell me they know nothing about it nor can do anything about it. I
needed someone professional to come out and just fix it or to verify it to prove
to the boss but no one knows this stuff.

Over 2 weeks I called and talked to about 30 electricians in the area, not a one
knew the term emf and that I must be crazy, only 1 had a clue after I explained
it to him. So I got him and his son out to check it out, he even had an older
meter that he had never really used because he never saw the problem before but
got the meter just incase. He was astounded by the high readings, I had to train
him some on the net current part and to get his current clamp out and voila we
saw current around the conduit which should have been none. They took several outlets
apart and could not figure out where or what wire was causing the problem, these
things are a real rats nest as to what wire goes where. There were already two
wires more than should be in one conduit coming from the fuse box yet not enough
neutrals. He said the only thing he could do was run another conduit and rewire
the whole thing taking maybe a few thousand $ of work, open ended. The boss was
flipping out about this and I am like well I cannot work here then. Finally I
figured that there was emf in the hall wall switch and trace down the wall to
downstairs, I pull that outlet open and see current through 1 white wire and
suggest for the electrician to disconnect that one wire. he does and all the emf
goes away.

Now the emf is 1 - 1.5 mg where I sit and most of that is coming from the
monitor. Normally the emf falls off very rapidly relative to distance from the
source (inverse square) but it did not do that in this case, the entire room was
reeking with emf. The cause was later figured out by me as a resonance of
current in a very high frequency because of the different lengths of wires in
all the circuits, multiple T connections etc. It was basically a large tank circuit
with current loops in addition the wire surrounded the room. The NEC code
book states that all neutral and hot wires should be exactly the same length in
a given circuit which was not near the case here. I acquired the NEC in digital
format and did a search and the terms EMF and magnetic field are just not in it.
No wonder electricians do not know about this problem. Resonance with wire
lengths was in the NEC book.

A note of measuring emf with a single axis meter: you take readings in the x, y
and z axis and then to total it would be the sum of vectors or (x^2 + y^2 + z^2)^.5
which is the square root of the sum of the squares of all the vectors or roughly
20% higher than the highest reading.

Anyway a year later my vision is a bit better than it was then but not back to
normal yet. Health is better but not normal yet. High emf means anything
over 2 mg for any extended amount of time and is deemed undesirable by all reports
by any GOV agency with 2 mg causing leukemia and having been proved. No one has
any studies on anything greater than 2 mg. Sweden and Russia have laws that it
cannot be higher than .5 in the workplace or lower. The high tension lines about
a half mile from here have 23 mg right under them where there are many
vegetables being grown or construction stuff parked and a very expensive
private school just the other side of it.

Many normal household devices emit high emf, anything with a motor or
transformer, microwave ovens, TV's, clock radios, sewing machines, florescent
lights, water bed heaters, electric blankets etc but the emf falls off rapidly
with distance so 3 feet and you are pretty much ok normally. The water bed
heaters, electric blankets is a big problem that not everyone knows about, they
could be rectified or dc to minimize the emf but those companies have not
figured that out yet.

The guy in the office opposite me had from 4-7 mg under the same conditions and
had been there for several years longer but not near as much emf as I yet way
over the recommended 2 mg limit. About the time I found out about the emf he was
diagnosed with prostrate cancer and had surgery to remove it. He has been
telling me of emotional problems with his daughter (she is about 17 now) for
years, she had clinical depression and associated anxiety causing her to keep to
herself and shun contacts with other people. I told him to check out his house
and he found that it was 10 mg where his daughter slept at her head. He said
that the electrical box for the house was exactly on the other side of that
wall. It took a few weeks for him to get his daughters bed moved away from there
but guess what, now a year later she has no problems, not going to the shrink
anymore and is participating in school now. Just how many others out there are
affected by this hidden problem?

One other thing is that I have to park on the roof of a parking structure and on
top of the elevator is a cell tower by Sprint, I have been told. The bottom of
those antennas are about 6 feet away from my head for about 1-2 minutes every
day. There are no Danger Signs nor any other signs about or near them. My
cellsensor (the cheap one) is supposed to measure them but it does nothing. The
sperry meter would not because it is band limited 30-400hz. I believe the Sprint
network is about 1.6Ghz whereas normal cell is about 860Mhz which could explain
the cellsensor not working for it is tuned to the normal freq. range. These cell
antennas are being placed everywhere, in thousands of church steeples and trees
etc all over, each 1-3 miles on a grid. Even more so because the different
cell companies do not share antennas.